Variety and niche creation in aircraft, helicopters, motorcycles and microcomputers

Article Abstract:

Research was conducted to examine variety and niche creation in aircraft, helicopters, motorcycles and microcomputers. Two variety measures are proposed. One is based on entropy while the other is based on Weitzman's maximum likelihood procedure. These measures are applied to the product characteristics of the four sectors. Results demonstrate that traditional niche theory cannot explain all trends observed and has to be extended to deal with the rate of change in costs as a result of technological improvements.

Electronic computers, Computers, Electronic Computer Manufacturing, Motorcycles, Motorcycle, Bicycle, and Parts Manufacturing, Aircraft, Aircraft Manufacturing, Motorcycles, bicycles, and parts, Helicopters, General, Research, Computer industry, Economic development, Aircraft industry, Motorcycle industry, Helicopter industry, Helicopters, Industry, Industries

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Network structure, self-organization, and the growth of international collaboration in science

Article Abstract:

A study analyzing the international collaboration in science as a self-organizing network, through the application of network tools, is presented.

United States, Netherlands, International aspects, Action research

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